The Pacific blob caused an 'unprecedented' toxic algal bloom - and there's more to come

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Last year, a massive toxic algae bloom swept the West Coast, resulting in record-breaking levels of a potentially deadly brain-damaging chemical and closing fisheries from California to British Columbia. Since then, scientists have been investigating the causes of the event - and now, a group of researchers think they've figured out how the event, which they term "unprecedented," happened. [Source: Washington Post]